Dusty1

Changed out fuel pump new one still no start so I ripped out manifold and spider injector rebuilt spider injector replaced fuel filter, spark plugs and wires. New fuel regulator cleaned throttle body. Still no start! So for the hell of it I tested old pump and it worked so I put that in and she starts like a dream but idles real rough and starts off real rough (almost stalls evertime)anyone have any ideas on why ! I'm thinking maybe the throttle position sensor maybe? But I'm not sure!